Tuneable homogeneous kG magnetic field production using permanent magnets
arXiv:2107.11308 · doi:10.1063/5.0064498
Abstract
We present a permanent magnet arrangement that can achieve a tuneable axial magnetic field from 1.80(8)-2.67(2) kG along the z-axis, where (x,y) = (0,0), with a rms field variation of less than 1% over a length of 25 mm. The instrument consists of an arrangement of off-the-shelf N42 neodymium-iron-boron (NdFeB) axially magnetized ring magnets, of varying outer and inner diameters. The magnets are organized into four cylindrical brass holders, whose relative separation can be manipulated to achieve the desired magnetic field strength and homogeneity over the region of interest. We present magnetic field computations and Marquardt-Levenberg fits to experimental data and demonstrate excellent agreement between theory and experiment. The apparatus has been designed to accommodate a cylindrical atomic vapor cell of length 25 mm and diameter 25 mm to lie within the bore of the ring magnets. The design has a clear aperture of 20 mm in the x-y plane along the z-axis, which opens up new avenues for imaging exploration in atomic spectroscopy.
arXiv comment7 pages, 5 figures
References in corpus (11)
- ElecSus: A program to calculate the electric susceptibility of an atomic ensemble
- An optical isolator using an atomic vapor in the hyperfine Paschen-Back regime
- Atomic Faraday filter with equivalent noise bandwidth less than 1 GHz
- Zeeman slowers made simple with permanent magnets in a Halbach configuration
- Hyperfine Paschen-Back regime in alkali metal atoms: consistency of two theoretical considerations and experiment
- Four-wave mixing in a non-degenerate four-level diamond configuration in the hyperfine Paschen-Back regime
- A heated vapor cell unit for DAVLL in atomic rubidium
- Solar Flare Prediction Using Magnetic Field Diagnostics Above the Photosphere
- Absorption spectroscopy and Stokes polarimetry in a Rb vapour in the Voigt geometry with a 1.5 T external magnetic field
- A versatile dual-species Zeeman slower for caesium and ytterbium
- Applying the weighted horizontal magnetic gradient method to a simulated flaring Active Region
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